EP3222876B1 - Dispositif d'amortissement pendulaire - Google Patents

Dispositif d'amortissement pendulaire Download PDF

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Publication number
EP3222876B1
EP3222876B1 EP17161246.8A EP17161246A EP3222876B1 EP 3222876 B1 EP3222876 B1 EP 3222876B1 EP 17161246 A EP17161246 A EP 17161246A EP 3222876 B1 EP3222876 B1 EP 3222876B1
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EP
European Patent Office
Prior art keywords
support
pendulum
attenuation system
pendulum body
abutment
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17161246.8A
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German (de)
English (en)
French (fr)
Other versions
EP3222876A1 (fr
Inventor
Michaël Hennebelle
Roel Verhoog
Giovanni Grieco
David Salvadori
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Valeo Embrayages SAS
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Valeo Embrayages SAS
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Publication of EP3222876A1 publication Critical patent/EP3222876A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
    • F16F15/145—Masses mounted with play with respect to driving means thus enabling free movement over a limited range

Definitions

  • the present invention relates to a pendular damping device, in particular for a motor vehicle transmission system.
  • the pendulum damping device can be integrated with a torsion damping system of a clutch capable of selectively connecting the heat engine to the gearbox, in order to filter the vibrations due to the acyclisms of the engine.
  • a torsion damping system is for example a double damping flywheel.
  • the pendulum damping device may be integrated with a friction disc of the clutch or a hydrodynamic torque converter or a flywheel secured to the crankshaft or a double clutch dry or wet.
  • Such a pendular damping device conventionally uses a support and one or more pendular bodies movable relative to this support, the displacement relative to the support of each pendulum body being guided by two rolling members cooperating on the one hand with bearing tracks secured to the support, and secondly with rolling tracks secured to the pendulum body.
  • Requirement DE 10 2012 214 214 discloses a pendulum damping device comprising: a support movable about an axis of rotation, at least one pendular body, movable relative to the support and, a noise attenuation system occurring during an impact of the pendulum body on the support, the noise attenuation system being made of plastic.
  • the object of the invention is to meet this need and it achieves this, according to a first aspect, with the aid of a pendulum damping device according to claim 1.
  • the presence of the attenuation system makes it possible to pinch the support, which limits the vibrations of the latter following a shock of the pendular body on the latter.
  • the attenuation system can thus act as a filter for these vibrations. This overcomes the problems identified above occurring for example when starting or when stopping the engine of the vehicle. Frequencies between 1000 Hz and 3000 Hz can for example be filtered.
  • the noise attenuation system is made of plastic material.
  • the plastic is particularly suitable for limiting the vibrations of the support following a shock of the pendulum body on the latter.
  • the attenuation system comprises a first part arranged axially of a first side of the support and a second part arranged axially of a second side of the support, the first part and the second part being separate parts secured to the support.
  • the first part of the attenuation system and the second part of the attenuation system may both have the same shape when viewed perpendicularly to the axis of rotation.
  • first and second parts can be done without the help of additional piece.
  • One of these parts for example male forms while the other of these parts bears female shapes, and these forms cooperate to allow this attachment, in particular by snapping.
  • connection between these first and second parts can be via connecting means, for example rivets or screws.
  • connection between these first and second parts can be done via the support on which each of the first and the second part is fixed.
  • Each part has for example pins cooperating in holes of the support to fix said part on the support.
  • the attenuation system comprises a first part arranged axially on a first side of the support, and a second part arranged axially on a second side of the support, the first part and the second part forming one and the same. piece overmolded on the support. Overmolding is for example carried out by three-dimensional printing on the support.
  • the first and the second part of the attenuation system may have the same shape, when observed perpendicularly to the axis of rotation.
  • the area of the support on which the noise attenuation system is overmoulded may comprise through-holes and these holes are then plugged by the overmolded material. This ensures a strong cohesion between the support and the noise attenuation system.
  • each part of the attenuation system is made of plastic, for example PA66, PA64, Hytrel®, a thermoplastic alloy or an elastomer, this list not being limiting.
  • Each of the first and second portions of the noise attenuation system is arranged to provide radial overlap between the radially outer zone of the noise attenuation system and the radially inner region of the pendulum body.
  • Each part of the noise attenuation system then has a reduced axial dimension, at the point where the radial overlap with the pendulum body occurs to release the axial space necessary for the displacement of this pendulum body. This radial overlap can allow each part of the attenuation system to form an axial interposition piece, thus replacing pads.
  • the displacement of the pendular body relative to the support can be guided by two rolling members in which case the damping device is called "two-wire".
  • Each rolling member cooperates for example with at least one first running track secured to the support and with at least one second running track integral with the pendulum body.
  • Each rolling member cooperates for example with the running track (s) integral with the support and with the running track (s) integral with the pendular body only via its outer surface.
  • Each rolling member is for example a roll of circular section in a plane perpendicular to the axis of rotation of the support.
  • This roll may comprise several successive cylindrical portions of different radius.
  • the axial ends of the roll may be devoid of a thin annular flange.
  • the roller is for example made of steel.
  • the roll may be hollow or full.
  • the device comprises for example a number of pendulum bodies between two and eight, including three, four, five or six pendulous bodies. All these pendular bodies may succeed one another circumferentially.
  • the device may thus comprise a plurality of planes perpendicular to the axis of rotation in each of which all the pendular bodies are arranged.
  • first and second runways may be such that each pendular body is only displaced relative to the support in translation about a fictitious axis parallel to the axis of rotation of the support.
  • the pendular damping device may comprise two integral supports and the pendulum body may comprise only a single pendular mass disposed axially between the two supports, or, if appropriate, several pendular masses secured to one another and arranged axially. between the two supports.
  • each support may comprise a noise attenuation system occurring during an impact of the pendular body against this support, said system axially clamping this support.
  • the noise attenuation system associated with each support is arranged axially only on the side of this support which is opposite the pendulum body.
  • the pendulum body may comprise a first pendulum mass arranged axially on one side of the support and a second pendulum mass disposed axially on a second side of the support and at least one connecting member solidifying this first and second pendulum mass.
  • the first part of the noise attenuation system may be arranged axially between the support and the first pendulum mass and the second part of said system may be arranged axially between the support and the second pendulum mass.
  • the radially outer zone of the first part of said system may have a reduced axial dimension, so as to increase the axial distance between the first pendulum mass and said radially outer zone, and the radially outer zone.
  • the second part of said system may have a reduced axial dimension, so as to increase the axial distance between the second pendulum mass and said radially outer zone.
  • At least one damping member coming into abutment of the pendulum body against the support can be connected to each part of the noise attenuation system.
  • This abutment damping member is for example directly attached to each part of the noise attenuation system.
  • the abutting damping member and each portion of the noise attenuation system are indirectly connected via the holder.
  • This abutment damping member may be disposed axially between the two parts of the noise attenuation system.
  • Each abutment damping member may then be carried by the support and disposed axially between the first pendulum mass and the second pendulum mass of the body.
  • Each abutment damping member is for example housed in the thickness of the support, being able to protrude locally beyond this thickness.
  • Two abutment damping members carried by the support are for example dedicated to each pendulum body.
  • Each abutment damping member is for example made of elastomer. This abutment damping member is for example disposed at least partly in a window receiving a connecting member of the pendulum body.
  • Each abutment damping member comes for example in contact with a connecting member for all or part of the relative positions of the pendular body relative to the aforementioned support.
  • each pendular body may carry an additional abutment damping member, being able to bear against the radially outer edge of the support, to participate in the damping of the abutment for all or part of the relative positions of the pendular body relative to the support mentioned above.
  • each of these abutment damping members can present successively when one moves radially outwards: a first portion of a first axial dimension, and a second portion of a second axial dimension, the second axial dimension being smaller than the first axial dimension.
  • a chamfer is for example formed at the second portion of the abutment damping member.
  • the rolling member cooperates with a single first raceway and with only one second raceway, and the second raceway is defined by the connecting member of the pendular body.
  • a portion of the contour of this connecting member defines for example the second rolling track.
  • a coating may be deposited on this portion of the contour of the connecting member to form the second raceway.
  • Such a connecting member is for example force-fitted via each of its axial ends into an opening in one of the pendular masses.
  • the connecting member may be welded or screwed or riveted via its axial ends on each pendulum mass.
  • each pendular body relative to the support can be guided by at least two rolling members, in particular exactly two rolling members.
  • Two connecting members each cooperating with a rolling member may be provided.
  • Each rolling member can then be stressed only in compression between the first and second raceways mentioned above.
  • These first and second race tracks cooperating with the same rolling member may be at least partly radially opposite, that is to say that there are plans perpendicular to the axis of rotation in which these raceways both extend.
  • each rolling member can be received in a window of the support already receiving a connecting member and receiving no other rolling member.
  • This window is for example defined by a closed contour, a portion of which defines the first rolling track secured to the support which cooperates with this rolling member.
  • the rolling member cooperates on the one hand with a single first raceway secured to the support, and on the other hand with two second raceways integral with the pendulum body.
  • Each pendulum mass then has an opening of which part of the contour defines one of these second raceways.
  • each connecting member includes for example several rivets, and this connecting member is received in a window of the support, while the rolling member is received in an opening of the support, distinct from a window receiving a liaison member.
  • two rolling members can guide the displacement of the pendular body relative to the support, and each rolling member cooperates with a first rolling track dedicated to this rolling member and with two second running tracks dedicated to this running gear.
  • each of the first and second parts of the noise attenuation system may have a plurality of circumferentially circumferentially closed contour cavities and not intended to receive means for fixing the support of said part of the attenuation system and / or means for fixing said part of the attenuation system to the other part of the attenuation system.
  • Two successive cavities can be separated by material bridges forming radial ribs.
  • Such cavities can give the noise attenuation system radial flexibility while maintaining the axial stiffness desired for the latter.
  • Such cavities are thus not used for fixing the noise attenuation system on the support but other cavities could be provided in said system for this purpose.
  • each of the first part and the second part of the noise attenuation system may have no closed contour cavity, since such cavities are not intended to receive fastening means.
  • all the cavities in the system serve to fix the latter on the support and / or to fix the first part of the system to the second part of the system.
  • the radial dimension of each part of the noise attenuation system may be small compared to that of the support.
  • the radial dimension of each part of the attenuation system represents for example between 10% and 30% of the radial dimension of the support.
  • each part of the attenuation system may be greater relative to that of the support, being for example between 30% and 60% of the radial dimension of the support.
  • the noise attenuation system may extend radially to the radially inner edge of the support.
  • each part of the attenuation system may depend on the axial dimension of the pendulum body.
  • the axial dimension of each part of the attenuation system may be between 0.5 mm and 1.2 times the axial dimension of a pendulum mass, being in particular between 2 mm and the axial dimension of the pendulum mass, better being between 2 mm and 0.8 times the axial dimension of the pendulum mass.
  • Each system can then be formed by only one of the parts of the noise attenuation system according to the preceding aspect of the invention. All that has been mentioned above, in particular with respect to the characteristics of such a part of the noise attenuation system, still applies to this other aspect of the invention.
  • the invention further relates, in another of its aspects, a component for a transmission system of a motor vehicle, the component being in particular a double damping flywheel, a hydrodynamic torque converter, or a hybrid transmission system component , or a flywheel integral with the crankshaft, or a clutch friction disc or a double wet or dry clutch, or a simple wet clutch, this component comprising a pendular damping device as defined above.
  • the support can be integral with this flywheel.
  • the component is in particular a clutch friction disc.
  • the support can be connected to the hub of the friction disk, being in particular welded to the hub of this friction disk.
  • This device 1 is here intended to be integrated with a clutch friction disk, for example associated with a heat engine including two, three or four cylinders.
  • the support 2 is for example intended to be welded to the hub of the clutch friction disc.
  • three pendulous bodies 3 are provided, being uniformly distributed around the periphery of the X axis.
  • the support 2 is here made in one piece, having a plate shape extending between two substantially parallel sides 4.
  • the connecting members 6, also called “spacers”, are in the example considered angularly offset.
  • the pendular damping device 1 is at rest, that is to say, it does not filter the torsional oscillations transmitted by the propulsion chain due to the acyclisms of the engine.
  • each end of a connecting member 6 is welded to a pendulum mass 5, so as to secure these two pendulum masses 5
  • each of these ends could be force-fitted into an opening in one of the pendulum masses 5
  • Each connecting member 6 extends partly in a window 19 formed in the support 2.
  • the window 19 defines a blank space inside the support 2, this window 19 being delimited by an outline closed 20.
  • the device 1 further comprises in the example in question rolling members 11 guiding the displacement of the pendular bodies 3 relative to the support 2.
  • the rolling members 11 are for example rollers.
  • each pendulum body 3 is guided by two rolling members 11, each of them cooperating in the example of the figures with one of the connecting members 6 of the body pendulum 3.
  • Each rolling member 11 cooperates here with a single first running track 12 integral with the support 2, and with a single second raceway 13 secured to the pendulum body 3 to guide the displacement of the pendulum body 3.
  • each second raceway 13 is formed by a portion of the radially outer edge of a connecting member 6.
  • Each first rolling track is defined by a portion of the contour 20 of a window 19.
  • Each first rolling track 12 is thus disposed radially opposite a second rolling track 13, so that the same running surface of a rolling member 11 rolls alternately on the first rolling track 12 and on the second rolling track 13.
  • the rolling surface of the rolling member 11 is here a cylinder of constant radius.
  • abutment damping members 22 of the pendulum body 3 against the support 2 are provided.
  • Each connecting member 6 is here associated with such an abutment damping member 22, each of these being configured to interpose between this connecting member 6 and the radially inner edge of the window 19 receiving this body member. link 6.
  • a system for attenuating the noise occurring during an impact of the pendulum body 3 on the support 2 is provided.
  • This attenuation system 30 is here arranged on each side of the support 2 and axially clamps this support 2.
  • the attenuation system 30 here comprises a first part 31 arranged axially on one side of the support 2 and a second part 32 arranged axially on a second side of the support 2.
  • Each part 31, 32 of the attenuation system 30 is made of plastic, in particular PA66, PA64, Hytrel®, a thermoplastic alloy or elastomer.
  • the first part 31 and the second part 32 are, according to the first example of implementation, separate parts secured to the support 2.
  • Each portion 31, 32 has according to the first variant, a small radial dimension, the latter being for example included between 10% and 30% of the radial dimension of the support.
  • Each portion 31, 32 here has an annular shape, when observed perpendicular to the axis of rotation X. Each portion 31, 32 then extends between a radially inner circular edge 33 and a radially outer circular edge 34.
  • each portion 31, 32 of the noise attenuation system 30 has, according to this first variant of the first embodiment of the invention, a plurality of cavities 37 of closed contour succeeding circumferentially. These cavities 37 are two by two separated by material bridges 38 forming radial ribs. It can be seen that these cavities 37 are not intended to receive fastening means between the parts 31 and 32 or the support.
  • the joining between the first and second parts 31 and 32 is according to the example of the Figures 1 to 6 with male shapes 40 carried by the first part 31 and which cooperate with female shapes 41 carried by the second part 32.
  • the fastening is effected for example by snapping.
  • the male shapes 41 still allow the attachment of the attenuation system 30 to the support 2, as can be seen in FIG. figure 2 .
  • the male shapes 41 and the female shapes 42 may be disposed radially inwardly with respect to the cavities 37.
  • each portion 31 and 32 of the attenuation system 30 is disposed radially inwardly relative to the pendulum bodies 3.
  • the attenuation system 30 then forms a stop for the radially inward displacement of the pendulum bodies 3, and the material in which these parts 31 and 32 are made allows a damping of the radial falls of the pendular bodies 3.
  • the figure 7 represents a second variant of the first embodiment of the invention.
  • the device 1 differs essentially from that described with reference to the figures 1 to 6 in that the first part 31 and the second part 32 of the attenuation system 30 do not have a closed contour cavity which is not intended to receive fastening means similar to those described above. There is thus not, according to this second variant, radial ribs associated with the recessed structures of the parts 31 and 32 according to the first variant.
  • FIGS. 8 to 12 represent a third variant of the first embodiment of the invention.
  • the pendular damping device 1 comprises only two pendulous bodies 3, and no longer three.
  • each part 31, 32 of the noise attenuation system 30 has a larger radial dimension, this dimension being between 30% and 60% of the radial dimension of the support 2. It can also be seen that the radially inner edge 33 of each portion 31, 32 extends to the radially inner edge of the support 2.
  • the securing of the first portion 31 to the second portion 32 is via the support 2.
  • Each portion 31, 32 carries for example pins 44 which snap into holes of complementary shape formed in the support 2 .
  • each part 31, 32 of the attenuation system 30 radially overlaps, via its radially outer zone 46, the radially inner zone of the pendulum bodies 3.
  • Each of said radially outer zones 46 may have a reduced axial dimension, so as to release the axial space necessary for the displacement of the pendular bodies 3.
  • each part 31, 32 of the noise attenuation system 30 is connected to two abutting damping members 50 of the pendulum body 3 against the support 2.
  • each damping member 50 is received at the bottom, radially speaking, of a window 19 of the support 2 already receiving a connecting member 6 of the pendulum body.
  • Each abutment damping member 50 is here fixed by the same rivet 51 to both the two parts 31 and 32 of the attenuation system 30, and the support 2.
  • a rod from one of the parts 31 or 32 may be hot riveted in a hole in the other of the portions 31 and 32 to provide simultaneous fixation with the abutting damping member 50 and with the support 2.
  • Each abutment damping member 50 carried by the support is here disposed axially between the first pendulum mass 5 and the second pendulum mass 5 of the pendulum body 3.
  • Each abutment damping member 50 is here made of elastomer.
  • each pendulum body 3 further carries an additional abutment damping member 52.
  • This additional abutment damping member 52 for example also made of elastomer, is able to bear against the radially outer edge support 2, to participate in the damping of the abutment of the pendulum body 3 against the support 2 for all or part of the aforementioned relative positions of the pendulum body 3 relative to the support 2.
  • This thinning of the abutment damping member 50 makes it possible to promote the flow of plastic material towards the pendulum masses 5, when this abutting damping member 50 is compressed.
  • the first part 31 of the attenuation system 30, which is arranged axially on the first side of the support 2, and the second part 32 of this system, which is arranged axially on the second side of the support 2 form a single piece overmolded on the support 2.
  • the overmolding is for example made by printing in three dimensions on the support.
  • the first 31 and the second 32 part of the attenuation system 30 have the same shape, when observed perpendicularly to the axis of rotation X.
  • the zone of the support 2 on which the attenuation system 30 is overmolded comprises through holes and these holes are then plugged by the overmolded material, so as to form material bridges 56 between each part 31, 32 of the system of FIG. attenuation 30 on the one hand.
  • This ensures a strong cohesion between the different parts 31, 32 of the attenuation system 30 on the one hand, and between the support 2 and the noise attenuation system 30 on the other hand.
  • the support 2 comprises two distinct parts 7 and 8.
  • the first part 7 extends mainly radially inside the second part 8 and this first part 7 serves to physically connect the pendular damping device 2 to the rest of the transmission system, the hub 70 of a friction disc clutch in the example described. This connection is made for example by welding the first portion 7 of the support 2 on the hub 70.
  • the second portion 8 of the support serves to guide the displacement of the pendular bodies 3, carrying a plurality of first tracks 12.
  • the first part 7 of the support is here obtained by cutting the central zone of the second portion 8 of the support 2.
  • a double damping flywheel for example a double damping flywheel, a hydrodynamic torque converter, a wet or dry double clutch, or a simple wet clutch, or a system component hybrid transmission, or a flywheel secured to the crankshaft are also possible.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)
  • Vibration Prevention Devices (AREA)
EP17161246.8A 2016-03-21 2017-03-16 Dispositif d'amortissement pendulaire Active EP3222876B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1652376A FR3049034B1 (fr) 2016-03-21 2016-03-21 Dispositif d'amortissement pendulaire

Publications (2)

Publication Number Publication Date
EP3222876A1 EP3222876A1 (fr) 2017-09-27
EP3222876B1 true EP3222876B1 (fr) 2019-10-23

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EP17161246.8A Active EP3222876B1 (fr) 2016-03-21 2017-03-16 Dispositif d'amortissement pendulaire

Country Status (5)

Country Link
EP (1) EP3222876B1 (zh)
KR (1) KR20170109498A (zh)
CN (1) CN107218348B (zh)
BR (1) BR102017005555A2 (zh)
FR (1) FR3049034B1 (zh)

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Publication number Priority date Publication date Assignee Title
DE102018201199A1 (de) 2018-01-26 2019-08-01 Zf Friedrichshafen Ag Tilgersystem
DE102018210293A1 (de) * 2018-06-25 2020-01-02 Zf Friedrichshafen Ag Drehschwingungsdämpfungsanordnung
FR3085732B1 (fr) * 2018-09-11 2021-11-26 Valeo Embrayages Dispositif d'amortissement pendulaire
WO2021228307A1 (de) * 2020-05-12 2021-11-18 Schaeffler Technologies AG & Co. KG Fliehkraftpendel

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Publication number Priority date Publication date Assignee Title
US4356884A (en) * 1981-08-31 1982-11-02 Reynolds Metals Company Acoustical enclosure system
US9032837B2 (en) * 2009-08-05 2015-05-19 Chrysler Group Llc Pendulum absorber system
US8424659B2 (en) * 2010-01-27 2013-04-23 GM Global Technology Operations LLC Vibration absorber
DE102010029464A1 (de) * 2010-05-28 2011-12-01 Zf Friedrichshafen Ag Torsionsschwingungsdämpferanordnung und Schwingungsdämpfereinrichtung, insbesondere in einer Torsionsschwingungsdämpferanordnung
DE102011086532A1 (de) 2010-12-15 2012-06-21 Schaeffler Technologies Gmbh & Co. Kg Fliehkraftpendel und Kupplungsscheibe mit demselben
DE102011086436A1 (de) * 2010-12-20 2012-06-21 Schaeffler Technologies Gmbh & Co. Kg Drehschwingungstilgervorrichtung und Drehmomentübertragungsvorrichtung für ein Kraftfahrzeug
DE102012214214A1 (de) * 2011-09-05 2013-03-07 Schaeffler Technologies AG & Co. KG Fliehkraftpendel auf Flansch
DE102012221265B4 (de) * 2011-12-07 2017-05-24 Schaeffler Technologies AG & Co. KG Fliehkraftpendel mit Dämpfer
FR2990736B1 (fr) * 2012-05-21 2014-05-16 Valeo Embrayages Dispositif de transmission de couple pour vehicule automobile
JP5949790B2 (ja) * 2014-01-14 2016-07-13 トヨタ自動車株式会社 捩り振動低減装置
FR3025275B1 (fr) * 2014-08-28 2016-11-04 Valeo Embrayages Dispositif d'amortissement d'oscillations de torsion

Non-Patent Citations (1)

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Title
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Publication number Publication date
EP3222876A1 (fr) 2017-09-27
CN107218348B (zh) 2021-11-02
CN107218348A (zh) 2017-09-29
FR3049034A1 (fr) 2017-09-22
KR20170109498A (ko) 2017-09-29
FR3049034B1 (fr) 2018-08-17
BR102017005555A2 (pt) 2017-11-21

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